<template>
  <div>
    <!-- 面包屑组件 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- card -->
    <el-card>
      <!-- 为echarts准备一个画布-->
      <div ref="main" id="main" style="width:600px; height:400px"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from "echarts";
import _ from 'lodash'
export default {
  data() {
    return {};
  },
  async mounted() {
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(this.$refs.main);
    // 请求真实数据
    const { data: res } = await this.$http.get(`reports/type/1`);
    console.log(res);
    if (res.meta.status !== 200) {
      return this.$message.error("获取报表失败");
    }
     // 需要被合并的数据对象
    const options = {
      title: {
        text: '用户来源'
      },
      tooltip: {
        trigger: 'axis',
        axisPointer: {
          type: 'cross',
          label: {
            backgroundColor: '#E9EEF3'
          }
        }
      },
      grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
      },
      xAxis: [
        {
          boundaryGap: false
        }
      ],
      yAxis: [
        {
          type: 'value'
        }
      ]
    }
    const result=_.merge(res.data,options);
    // 使用刚指定的配置项显示报表
    myChart.setOption(result);
  }
};
</script>

<style lang="less" scoped>
.el-card {
  margin-top: 20px;
}
</style>
